2002 HDi SX - Front wipers not working

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My Name: big_jon27

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Joined: Tue Jan 22, 2013 10:30 am

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Did something really stupid yesterday!

Hit the front wipers on when they were frozen to the window and now they don't work!

Have pulled out the 30a fuse from under the bonnet (F17) and it's fine.

You can hear the relay clicking in the fuse box when you operate the stalk on the steering wheel but no volts to the Motor (Only on the small wire that I assume is so the wipers know when parked?)

Any ideas what this can be? Is it just the BSI having a fault code that might need to be cleared or more serious?

Regards,
Jon (C3 owner praying it doesn't rain or snow!)
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My Name: C3driver52

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Posts: 1940
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
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Welcome to the C3 forum Jon

I assume the small wire you refer to is blue in colour?

With the wipers set to wipe, allowed to make a full arc and return wile taking the readings on a meter set to VDC.

Check for 12v to a known good earth point (like the battery -ve terminal) on each of the 2 grey wires on the wiper motor plug.

Then check for 12v at the fuse F17 in the engine bay fuse box. There are 2 terminals on the fuse, check each one in turn. You may need to fiddle around to get a good connection or try another fuse that has the connections exposed.

If you could let me know what readings you get, I will look a bit deeper for you. Its unlikely to be a BSI fault, much more likely a burnt connection, faulty fuse or damaged relay. The control side seems ok as you can hear the relay click, so don't panic.
My Name: big_jon27

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Posts: 6
Joined: Tue Jan 22, 2013 10:30 am

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Thanks C3driver52,

I Checked the four wires that go into the motor - Only got 12v on one of the small wires, sorry cant recall colours (-ve back to battert terminal) that I guess is to do with the park mode sensor?

The two big wires (mine are Orange and Pink?) there is no reading at all.

Not tested the out put from the fuse - seems a pig to get at!

Also is there a relay under the box? Looks like it should open out some how to get underneath but was not able to open it.

Was thinking of getting it out to see if a relay terminal has burnt out, but did not want more electrical problems by disconnecting things!

Seems mad that the fuse didnt blow!

Regards,
Jon
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My Name: C3driver52

Guru
Posts: 1940
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 114 times
Been thanked: 67 times

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The check for power at the fuse can save time, if there is no power at the fuse then its not the relay at fault. If you have power on one side of the fuse, its blown, both sides will mean the relay is most likely. As you say, the F17 is nicely hidden under the front wing making it virtually impossible to get to :(

Maybe a modified fuse, with extra (insulated) flying leads to bring the test point in reach of the test meter?

I would plump for the relay and if its not that, then its going to be close to it. I am guessing the relay is going to be in or under the engine bay fuse box I have not taken the fuse box out -- yet, so it would be nice to get some instructions and photos of how to get it out, and what it looks like when its out :)

Looking at some pictures, the fuse box looks like a module that is supposed to be removed. Disconnect the battery, remove the earth connection from inside, remove all the connectors, undo a fixing screw and unclip the fusebox - would be my guess. You may need to remove the battery to get a good access to the fuse box.

As for introducing faults when fixing the wiper fault, well, that's just a risk you will have to take. You are not going to get far without wipers!
My Name: big_jon27

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Joined: Tue Jan 22, 2013 10:30 am

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OK Thanks,

Well no rain or snow forecast all week so hope ok til the weekend when I can have a look in the daylight!

Couldn't see a retaining screw or anything??

I tried to get it out but it wouldnt budge!

It looks likes it's been out at some point before as not really held in by much.
My Name: big_jon27

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Joined: Tue Jan 22, 2013 10:30 am

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I dont have a circuit diagram to check:

Is the Power at the fuse before the relay or after??

i.e. should the fuse be 'live' when you turn on the ignition or only when you operate the wipers?

Thanks
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My Name: C3driver52

Guru
Posts: 1940
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 114 times
Been thanked: 67 times

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It goes Battery - Fuse - Relay - Wiper Motor,

So the fuse protects the whole circuit, the fuse should be live with the ignition off or on (according to my diagram)
My Name: big_jon27

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Posts: 6
Joined: Tue Jan 22, 2013 10:30 am

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OK Thanks,

Will check when I get chance.

Spoke to an Ind Citroen specialist and they kept on going about fuses on the BSI and a Maxi fuse??

Told them I had a fuse box under the bonnet as well as glove box and this seemed to blow their minds!!!

Jon
User avatar
My Name: C3driver52

Guru
Posts: 1940
Joined: Sat Apr 30, 2011 7:40 pm
Model: C3 2002-2005, Original shape model
Year: 2003 (03)
Engine Size: 1.4 i
Fuel Type: Petrol
Mileage: 79984
Trim Level: VTR+
Gearbox: Manual 5 speed
DPF: No
LHD or RHD: RHD (UK)
Engine name: TU3 (75 PS)
Has thanked: 114 times
Been thanked: 67 times

Post

Fuses in the glove box are the fuses on the BSI - its the same thing.

The MAXI fuses are the high rated fuses that Citroen don't want you to change and may not be noted on any of the fusebox diagrams on this site. (Until someone adds the information)

The maxi fuses tend to supply other fuses and whole systems that are then fused themselves. With only one thing not working, its unlikely to be a maxi fuse.
My Name: big_jon27

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Posts: 6
Joined: Tue Jan 22, 2013 10:30 am

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thanks, thats what i thought as well.

right i have checked all fuses (listed in another post somewhere) and all are fine.

Checked the power at F17 fuse under the bonnet andthe top terminal reads 12v. So is it the realy in the bottom of the fuse box? The Citroen guy said there are no relays and it`s all one piece?

Regards,
Jon
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